FT-IR Testing
For instance, if the plastic type has been switched,
we can perform FT-IR (Fourier Transform Infrared Spectroscopy)
testing to compare the spectrum with a standard database.
This allows us to classify and confirm the type of plastic used.
SEM/EDX Analysis
Even if the material is identified as the same type through FT-IR testing, there could be additives introduced to reduce costs, potentially affecting the plastic's properties.
In such cases, SEM/EDX (Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy) analysis can be employed to differentiate between normal and problematic parts.
SEM examines the external morphology and structure, while EDX analyzes and identifies the elements present in the plastic.
This combination allows for a comprehensive comparison between affected and normal plastic parts.
DSC and TGA Testing
If the plastic has a blend of different types of plastics, its characteristics may change.
We utilize DSC (Differential Scanning Calorimetry) and TGA (Thermogravimetric Analysis) to determine the blend ratio and combustion residues, indicating the material's purity.
The example below shows the ratio of Polyethylene and Polypropylene,
followed by SEM/EDX analysis of the residues to identify their type.